Here is the full list of all 32 Psy High 2: High Summer achievements.
Make it through a round of bonding exercises
Break up so that you can have a summer romance
Do absolutely nothing
Call a friend from home
Find a missing bracelet
Date a brooding, mysterious person
Date your co-counselor
Make a philosophical argument
Sneak into your boss's office
Popsicles!
…comes great responsibility
Have a date night at summer camp
Use your powers to see into the future
Win Colorwars honestly
Cheat your way to victory in Colorwars
Lose Colorwars on purpose
Catch an earworm via telepathy
Give up a memory
Be declared guilty of a crime
Try to save Camp Cedarcrest—and succeed!
Try to close Camp Cedarcrest—and succeed!
Fool your opponent into thinking you're a friend
Succeed at maintaining the magical status quo
Make sure that everyone lives, just this once
Succeed at destroying a powerful source of magic
Give the gift of magic—and make a new leader
Help a new leader come to power—without magic
Good things—like love—come to those who wait
Help a friend find safety—forever
Bring a friend back into the world
Join the Timeless Circle
Become the leader of the Timeless Circle